Perhaps you should try some spelling variations:
pham thuc » pham chuc, nham thuc, pham thu
thanh lai » thanh hai, thanh lap, thanh loi
phap thuc » phap thu, phap hoc, phap tu
tu sach » thu sach, su sach, te sach
cuu tre » cua tre, cau tren, cau treo
sach cu » sach cua, sach tu, sach uu
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
cu lang » cua lang, tu lang, xu lang
cua te » cua tu

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach cu lang xa hoi. hieu ve ((pham thuc) OR (phap thuc)) gia thanh lai ((cua te) OR (cuu tre))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach cu lang xa hoi. hieu ve ((pham thuc) OR (phap thuc)) gia thanh lai ((cua te) or (cuu tre))~".
• Adding a wildcard symbol may retrieve word variants: tu sach cu lang xa hoi. hieu ve ((pham thuc) OR (phap thuc)) gia thanh lai ((cua te) or (cuu tre))*.